Stereoscopic acuity measurement in aphakia.

We performed a variety of tests to assess binocular function on monocular aphakic patients wearing contact lenses, monocular pseudophakic patients, bilateral spectacle-wearing aphakic patients, bilateral aphakic contact lens wearers, and bilateral pseudophakic patients. Stereoscopic acuity levels at distance and near when visual acuity was at least 6/12 (20/40) provided the most useful data. Pseudophakic patients and contact lens wearers performed equally well and outperformed spectacle wearers. Implant patients did not have superior stereoscopic acuity.